Multi-layer ceramic capacitor and production method thereof

ABSTRACT

The present invention relates to a multi-layer ceramic capacitor printed simultaneously with internal electrode and external electrode by employing an inkjet printing. A method for manufacturing the multi-layer ceramic capacitor comprising first external electrode, dielectric, internal electrode and second external electrode prints simultaneously the first external electrode; the internal electrode which is connected with the first external electrode and formed at an invaginated portion of the dielectric invaginated to allow one side to be opened at one portion; and the second external electrode which is formed integrally with the internal electrode by employing an inkjet printing. According to the present invention, a method for manufacturing the multi-layer ceramic capacitor resolves contact problems by printing integrally the internal electrode and the external electrode and reduces the manufacturing process.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of prior application Ser. No.11/330,302, filed Jan. 12, 2006, in the U.S. Patent and TrademarkOffice, now pending, which claims benefit under 35 U.S.C. § 119(a) ofKorean Patent Application No. 2005-24326, filed on Mar. 24, 2005 in theKorean Intellectual Property Office, the entire contents of which areincorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an electronic component, particularly amulti-layer ceramic capacitor and a manufacturing method thereof.

2. Description of the Related Art

Multi-layer ceramic capacitor (MLCC: Multi-Layer Ceramic Capacitor) isan electronic component of laminated capacitors with a number of layersand performs various functions such as blockage of DC signals,bypassing, resonant frequency, and the like. Needs for smaller andlightweight multi-layer ceramic capacitor are increasing with thedevelopment of handheld communication terminals. According to theconventional technology, a multi-layer ceramic capacitor has beenprepared by printing an electrode paste on a green sheet via a printingmethod such as screen printing, flexo printing, and gravure printing,cutting after layering a plurality of the green sheets, firing at a hightemperature, coating an external electrode, firing, and coating.

Since an internal electrode is printed on the sheet of the printeddielectric, when dielectric sheets are layered, it causes heightdifference due to difference in thickness of the internal electrode.Referring to FIG. 1, it shows an internal electrode 110 and a dielectric120, which form height difference a due to difference in thickness ofthe internal electrode. In order to reduce the height difference is itproposed to reduce the thickness of the internal electrode but it islimited to reduce it.

As described above, a process for manufacturing the multi-layer ceramiccapacitor comprises molding, printing, layering, compressing, cutting,polishing, and processing of external electrodes. Thus, when connectionbetween dielectric sheets is poor, it causes delamination. In addition,when the internal electrode and the external electrode are producedindividually, it causes contact problem between the internal electrodeand the external electrode.

SUMMARY OF THE INVENTION

It is therefore an object of the present invention to provide amulti-layer ceramic capacitor, which resolve height difference byprinting simultaneously the internal electrode and the externalelectrode, and manufacturing method thereof.

It is further object of the present invention to provide a multi-layerceramic capacitor to improve adhesion between dielectric sheets duringlayering and manufacturing method thereof.

It is still further object of the present invention to provide amulti-layer ceramic capacitor, which resolve contact problem by printingintegrally the internal electrode and the external electrode, andmanufacturing method thereof.

It is still further object of the present invention to provide amulti-layer ceramic capacitor, which reduces a manufacturing process byprinting simultaneously the internal electrode and the externalelectrode, and manufacturing method thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other aspects and advantages of the present generalinventive concept will become apparent and more readily appreciated fromthe following description of the embodiments, taken in conjunction withthe accompanying drawings of which:

FIG. 1 illustrates difference in height produced by internal electrodesof a conventional multi-layer ceramic capacitor.

FIG. 2 illustrates a method for simultaneously printing a dielectric andan electrode by an inkjet printing according to a preferred embodimentof the present invention.

FIG. 3 is a cross sectional view of a pattern of the dielectric and theelectrode simultaneously printed by an inkjet printing according to apreferred embodiment of the present invention.

FIG. 4 is a side view of a pattern of the dielectric and the electrodesimultaneously printed by an inkjet printing according to a preferredembodiment of the present invention.

FIG. 5 is a cross sectional view of a multi-layer ceramic capacitorlayered with the dielectric and the electrode simultaneously printed byan inkjet printing according to a preferred embodiment of the presentinvention.

FIG. 6 is a side view of a pattern of the dielectric and the electrodesimultaneously printed by an inkjet printing according to the firstembodiment of the present invention.

FIG. 7 illustrates a method for layering the dielectric and theelectrode simultaneously printed by an inkjet printing according to thefirst embodiment of the present invention.

FIG. 8 is a flow chart illustrating a process for forming a multi-layerceramic capacitor by utilizing the dielectric and the electrodesimultaneously printed by an inkjet printing according to the firstembodiment of the present invention.

FIG. 9 illustrates a method for layering the dielectric and theelectrode simultaneously printed by an inkjet printing according to thesecond embodiment of the present invention.

FIG. 10 is a flow chart illustrating a process for forming a multi-layerceramic capacitor by utilizing the dielectric and the electrodesimultaneously printed by an inkjet printing according to the secondembodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the embodiments of the presentgeneral inventive concept, examples of which are illustrated in theaccompanying drawings, wherein like reference numerals refer to the likeelements throughout. The embodiments are described below in order toexplain the present general inventive concept by referring to thefigures. Here, the inkjet printing may be a method to spray ink for theelectrode according to a predetermined pattern by employing an inkjetprint head.

Further, the internal electrode, the first external electrode, and thesecond electrode may be printed simultaneously along with the dielectricby an inkjet printing. The inkjet printing may be a method to spray inkfor the electrode and ink for the dielectric according to apredetermined pattern by employing a plurality of inkjet print heads.

Here, a plurality of inkjet print heads may comprise an inkjet printhead for the electrode spraying ink for the electrode and an inkjetprint head for the dielectric spraying ink for the dielectric. Theinkjet print head for the electrode and the inkjet print head for thedielectric can spray ink by moving integrally or by moving independentlyaccording to its own operation signals.

According to another preferred embodiment of the present invention, itis provided a multi-layer ceramic capacitor prepared the methoddescribed above.

According to another preferred embodiment of the present invention, itis provided a device for manufacturing a multi-layer ceramic capacitorcomprising an inkjet print head for the electrode spraying ink for theelectrode, and an inkjet print head for the dielectric spraying ink forthe dielectric, wherein the inkjet print head for the electrode and theinkjet print ink for the dielectric print simultaneously each internalelectrode, external electrode, and dielectric.

Here, the inkjet print head for the electrode simultaneously prints thefirst external electrode, the internal electrode connected to the firstexternal electrode and formed at an invaginated portion of thedielectric invaginated to allow one side to be opened at one portion,and the second external electrode integrally formed with the internalelectrode by an inkjet printing.

In addition, the inkjet print head for the electrode and the inkjetprint head for the dielectric may spray inks by moving integrally or bymoving independently according to its own operation signals.

According to another preferred embodiment of the present invention, itis provided a method for manufacturing a multi-layer ceramic capacitorcomprising: simultaneously printing the internal electrode, the externalelectrode, and the dielectric by spraying ink for the electrode and inkfor the dielectric according to a predetermined pattern employing aplurality of inkjet print heads; layering and compressing the dielectricsheets printed with the internal electrode and the external electrode;cutting the dielectric sheets according to the predetermined pattern;and sintering the dielectric sheets.

Here, a cutting line to cut said dielectric sheets is parallel to theexternal electrode and divides the external electrode into two. Thepredetermined pattern is a pattern formed with alternating a line-shapedelectrode and a comb-shaped electrode, wherein the line-shaped electrodeis the first external electrode, a protrusion part of the comb-shapedelectrode is the internal electrode and a body part of the comb-shapedelectrode is the second external electrode.

A plurality of inkjet print heads may comprise an inkjet print head forthe electrode spraying ink for the electrode and an inkjet print headfor the dielectric spraying ink for the dielectric.

Here, the inkjet print head for the electrode and the inkjet print headfor the dielectric may spray inks by moving integrally or by movingindependently according to its own operation signals.

According to another preferred embodiment of the present invention, itis provided a method for manufacturing a multi-layer ceramic capacitorcomprising: forming lower dielectric sheets simultaneously printed withinternal electrode, external electrode, and dielectric by spraying inkfor the electrode and ink for the dielectric according to apredetermined pattern employing a plurality of inkjet print heads;forming upper dielectric sheets with a predetermined numbersimultaneously printed with internal electrode, external electrode, anddielectric by spraying ink for the electrode and ink for the dielectricaccording to a predetermined pattern employing a plurality of inkjetprint heads on the lower dielectric sheets; and sintering the lowerdielectric sheets and the upper dielectric sheets with a predeterminednumber.

Here, a method may further comprise cutting the lower dielectric sheetsand the upper dielectric sheets according to a predetermined pattern.

A plurality of inkjet print heads comprise an inkjet print head for theelectrode spraying ink for the electrode and an inkjet print head forthe dielectric spraying ink for the dielectric.

Here, the inkjet print head for the electrode and the inkjet print headfor the dielectric may spray inks by moving integrally or by movingindependently according to its own operation signals.

According to another preferred embodiment of the present invention, itis provided a multi-layer ceramic capacitor comprising a first externalelectrode, dielectric invaginated to allow one side to be opened at aportion and connected to the first external electrode, internalelectrode formed at the invaginated portion of the dielectric, and aplurality of dielectric sheets printed with a second external electrodeformed integrally with the internal electrode, wherein the dielectricsheets are layered symmetrically with the first external electrode andthe second external electrode to connect electrically each other.

Here, the first external electrode, the dielectric, the internalelectrode, and the second external electrode can be printedsimultaneously by an inkjet printing and the inkjet printing is a methodto spray ink for the electrode and ink for the dielectric according to apredetermined pattern by employing a plurality of inkjet print heads.

Further, the dielectric, the internal electrode, and the second externalelectrode may be formed with different materials from each other.

Hereinafter, embodiments of the multi-layer ceramic capacitor andmanufacturing method thereof according to the present invention will bedescribed in more detail with accompanying drawings, and in describingdrawings, same or corresponding member will have same reference numberand repeated description will be omitted throughout whole drawings.Further, the present invention can be generally applicable tomulti-layer ceramic electronic components using layered ceramics andwill describe general theory of the multi-layer ceramic capacitor priorto the detailed description of the preferred embodiments of the presentinvention.

A multi-layer ceramic capacitor comprises dielectric, internalelectrode, and external electrode. The dielectric is an external body ofthe multi-layer ceramic capacitor and made from ceramic materials sothat it is called as “ceramic body”. Typical electric is BaTiO₃(BariumTitanate, BT) which has a high conductivity at an ambient temperature. Asinteration temperature of BT powder dielectric is about 1250° C.

The internal electrode is positioned in the dielectric and conductivematerials. Example of the internal electrode includes palladium (Pd),nickel (Ni), copper (Cu), and the like of which each melting temperatureis 1555° C., 1452° C., 1083° C., respectively. The external electrode isconductive material to connect the multi-layer ceramic capacitor with anexternal power. Since the external electrode is designed for a componentfor surface mount, it not only connects with an external power but alsoperforms that solder adheres well thereto when it is mounted on thesubstrate.

FIG. 2 illustrates a method for simultaneously printing a dielectric andan electrode by an inkjet printing according to a preferred embodimentof the present invention. Referring to FIG. 2, each inkjet print headfor the electrode 240 and inkjet print head for the dielectric 250 formelectrodes 230 and dielectrics 220 on a carrier film 210 according to apredetermined pattern.

The inkjet print head for the electrode 240 and the inkjet print headfor the dielectric 250 spray ink for the electrode and ink for thedielectric, respectively. The ink for the electrode may comprise metalpowder such as palladium (Pd), nickel (Ni), copper (Cu), tungsten (W),molybdenum (Mo), and the like, binder and solvent and the ink for thedielectric may comprise BT powder, binder, and solvent. Here, the inkfor the electrode and the ink for the dielectric may use differentsolvents which are not miscible so that when they are printedsimultaneously, they are not miscible.

Here, the term simultaneous printing of the electrode and the dielectricby an inkjet printing means not only spraying ink for the electrode andink for the dielectric at the same time but also printing the electrodeand the dielectric according to a predetermined program and pattern byemploying a plurality of inkjet print heads. Thus, the electrode and thedielectric can be printed simultaneously or with the same pass. Forexample, referring to FIG. 2, the inkjet print head for the electrode240 and the inkjet print head for the dielectric 250 move integrally onthe carrier film 210 to simultaneously print the internal electrode andthe dielectric. Here, the inkjet print head for the electrode 240 stopsmoving and the inkjet print head for the dielectric 250 only sprays inkfor the dielectric at the portion where only dielectric is printed.Further, simultaneous printing of the electrode and the dielectric meansprinting at the same pass.

Such inkjet print head for the electrode 240 and inkjet print head forthe dielectric 250 may be a head of inkjet print device to spray inks.For example, the inkjet print device may comprise a supporting part tosupport the device, an inkjet print head printing internal electrode anddielectric by spraying inks on a carrier film according to apredetermined pattern, a moving means moving the inkjet print head onthe carrier film 210, and a circuit part performing program which is forthe inkjet print head to spray inks according to a predeterminedpattern.

Here, the inkjet print head for the electrode 240 and the inkjet printhead for the dielectric 250 can spray by moving integrally. That is, theelectrode and the dielectric are printed at the same pass according to apredetermined pattern. When the head moves at the same time, theelectrode and the dielectric can be printed according to a predeterminedpattern with controlling spraying time and amount from each head.According to another embodiment of the invention, the inkjet print headfor the electrode 240 and the inkjet print head for the dielectric 250can spray by moving independently according to its own operationsignals. That is, each head has one device or a separate device so thatit receives a different signal by a different program and operatescorresponding to the signal.

Here, an electrode 230 is an electrode formed with the internalelectrode and the external electrode integrally. That is, a portion tobe used for the internal electrode and a portion to be used for theexternal electrode are distinguished according to a predeterminedpattern on the electrode 230. The pattern distinguishing the internalelectrode and the external electrode will be described in detailhereinafter.

FIG. 3 is a cross sectional view of a pattern of the dielectric and theelectrode simultaneously printed by an inkjet printing according to apreferred embodiment of the present invention and FIG. 4 is a side viewthereof. FIG. 5 is a cross sectional view of a multi-layer ceramiccapacitor layered with the dielectric, the internal electrode and theexternal electrode simultaneously printed by an inkjet printingaccording to a preferred embodiment of the present invention.

Referring FIGS. 3 to 5, the external electrode 310(1), 310(2), thedielectric 320 and the internal electrode 330 are illustrated. Since theinternal electrode 330 and the external electrode 310(2) are formedintegrally, it resolves contact problem associated with the conventionaltechnologies. Here, the internal electrode 330 and the externalelectrode 310(1), 310(2) can be formed with the same types of metal ordifferent from each other according to the program of the inkjetprinting. When the internal electrode 330 and the external electrode310(1), 310(2) are formed from different metal from each other, theinkjet print head 240 may be performed in two ways. Alternatively, oneinkjet print head for the electrode moves according to a predeterminedpattern and sprays ink for the internal electrode at the internalelectrode portion and ink for the external electrode at the externalelectrode portion. According to the other method, the inkjet print headof the electrode 240 comprises an inkjet print head for the internalelectrode and an inkjet print head for the external electrode whichspray ink for the internal electrode and ink for the external electrodeto print the internal electrode and external electrode, respectively.

Here, when dielectric sheets simultaneously printed with the electrodeand the dielectric are layered to be cross-over by 180° C. andsymmetrical about the transverse direction, the multi-layer ceramiccapacitor is formed. That is, the dielectric sheet is rotated about acenter of the dielectric as a rotational axis and the external electrode310(1) of the lower dielectric sheet and the external electrode 310(2)of the upper dielectric sheet are layered to be overlapped with apredetermined number and thus, the multi-layer ceramic capacitor isformed. At one end, the external electrode 310(1) of the lowerdielectric sheet and the external electrode 310(2) of the upperdielectric sheet are electrically connected each other which form a partof the first whole external electrode of the multi-layer ceramiccapacitor and at the other end, the external electrode 310(2) of thelower dielectric sheet and the external electrode 310(1) of the upperdielectric sheet are electrically connected each other which form a portof the second whole external electrode of the multi-layer ceramiccapacitor. The first whole external electrode and the second wholeexternal electrode are insulated from each other to form both ends ofthe multi-layer ceramic capacitor.

Therefore, the external electrode 310(1) of the lower dielectric sheetand, the external electrode 310(2) of the upper dielectric sheet areoverlapped each other so that it doesn't cause contact problem betweenthe internal electrode and the external electrode. The dielectric isinvaginated to allow one side to be opened at one portion and isconnected with the external electrode 310(1) at the unopened side and isconnected with the external electrode 310(2) at the opened side. Inaddition, the dielectric of the lower dielectric sheet and thedielectric of the upper dielectric sheet are contacted each other andact as a dielectric between layers of the multi-layer ceramic capacitor.When the dielectric is invaginated more than half toward the transversedirection and the dielectric sheets are layered symmetrically about thetransverse direction, the internal electrodes 330 formed at theinvaginated portion are overlapped of a certain part with dielectricstherebetween. Thus, overlapped portion of the internal electrode (330)acts as an electrode in the multi-layer ceramic capacitor.

Figures illustrating the multi-layer ceramic capacitor and itsmanufacturing method have been described above. Hereinafter themulti-layer ceramic capacitor and its manufacturing method will bedescribed in more detail based on particular embodiments of theinvention. The embodiments of the present invention are divided into twoof which one is a method for forming dielectric sheet on a carrier filmby an inkjet printing and then laminating the formed dielectric sheetsand the other is a method for forming dielectric sheet by an inkjetprinting and then forming dielectric sheets on the formed dielectricsheet repeatedly by an inkjet printing.

FIG. 6 is a side view of a comb-shaped pattern of the dielectric and theelectrode simultaneously printed by an inkjet printing according to thefirst embodiment of the present invention and FIG. 7 illustrates acontact point when the dielectric and the electrode simultaneouslyprinted by an inkjet printing according to the first embodiment of thepresent invention are laminated.

Referring FIGS. 6 and 7, a protrusion part of the comb-shaped electrodeis an internal electrode 630, a body part of the comb-shaped electrodeis an external electrode 610(2), and the line-shaped electrode formedbetween the comb-shaped electrodes is another external electrode 610(1).The external electrode 610(2) of the upper dielectric sheet and theexternal electrode 610(1) of the lower dielectric sheet are overlappedto laminate dielectric sheets with a predetermined number. It is cutaccording to a pattern to provide a multi-layer ceramic capacitor,wherein the internal electrodes are laminated alternatively. A cuttingline to cut the dielectric sheet is parallel to each external electrode610(1), 610(2) and divides the external electrode 610(1), 610(2) in two.

FIG. 8 is a flow chart illustrating a process for forming a multi-layerceramic capacitor by utilizing the dielectric and the electrodesimultaneously printed by an inkjet printing according to the firstembodiment of the present invention.

At S810, the external electrode 610(1), 610(2), the dielectric 620 andthe internal electrode 630 are printed according to a predeterminedpattern by employing the inkjet print head for the electrode 240 and theinkjet print head for the dielectric 250.

At S820, the dielectric sheets printed with the external electrode610(1), 610(2), the dielectric 620 and the internal electrode 630 arelayered with a predetermined number and at S830, the layered dielectricsheets are compressed and further cut into a chip unit at S840. At S850,the chip is sintered and coated to produce the desired multi-layerceramic capacitor with chip unit. Therefore, the present inventionprovides advantages of that a process for forming the external electrodecan be omitted and the process of laminating, compressing and cutting ofthe conventional technologies can be utilized at its maximum.

FIG. 9 illustrates a method for layering the dielectric and theelectrode, which are simultaneously printed by an inkjet printing,through a build-up method according to the second embodiment of thepresent invention. Referring to FIG. 9, the external electrode 910(1),910(2), the dielectric 920 and the internal electrode 930 are printed byemploying the inkjet print head for the electrode 940 and the inkjetprint head for the dielectric 950. The dielectric sheet is laminatedwith a predetermined number and the pattern printed on the dielectricsheet is rotated by 180° C. one after another. Thus, the lowerdielectric sheet and the upper dielectric sheet are contacted each otherat the external electrode 910(1), 910(2).

FIG. 10 is a flow chart illustrating a process for forming a multi-layerceramic capacitor by layering the dielectric and the electrode, whichare simultaneously printed by an inkjet printing, through a build-upmethod according to the second embodiment of the present invention. Thedifference from the first embodiment is described in more detail.

At S1010, the external electrode 610(1), 610(2), the dielectric 620 andthe internal electrode 630 are printed according to a predeterminedpattern by employing the inkjet print head for the electrode 240 and theinkjet print head for the dielectric 250. This printing process isrepeated on the printed dielectric sheet. Thus, unlike the firstembodiment described above, the process for laminating the dielectricsheets is omitted.

At S1020, it is cut into a chip unit. Here, a process for cutting into achip unit is inserted but if the dielectric sheet with a chip unit fromthe beginning is printed and laminated, this process can be alsoomitted. At S1030, the formed chip is sintered and coated to produce thedesired multi-layer ceramic capacitor with a chip unit.

Therefore, according to this method, molding, printing, laminating,compressing, cutting, and forming processes of external electrodes canbe obtained by only one process.

Although the foregoing description details various embodiments of theinvention, it will be appreciated that the embodiments are only examplesof realizing the spirit of the invention, and that any changed ormodified examples remain within the scope of the invention so long asthey do not depart from the spirit of the invention.

As described above, the multi-layer ceramic capacitor and manufacturingmethod thereof of the present invention resolves height difference byprinting simultaneously the internal electrode and the externalelectrode.

Further, the multi-layer ceramic capacitor and manufacturing methodthereof of the present invention provides improved adhesion betweenlaminated dielectric sheets.

Still further, the multi-layer ceramic capacitor and manufacturingmethod thereof of the present invention resolves contact problem byprinting integrally the internal electrode and the external electrode.

Although a few embodiments of the present general inventive concept havebeen shown and described, it will be appreciated by those skilled in theart that changes may be made in these embodiments without departing fromthe principles and spirit of the general inventive concept, the scope ofwhich is defined in the appended claims and their equivalents.

1. A device for manufacturing a multi-layer ceramic capacitor comprisingan inkjet print head for the electrode spraying ink for the electrode,and an inkjet print ink for the dielectric spraying ink for thedielectric, wherein said inkjet print head for the electrode and saidinkjet print head for the dielectric print simultaneously each internalelectrode, external electrode, and dielectric.
 2. The device formanufacturing a multi-layer ceramic capacitor of claim 1, wherein saidinkjet print head for the electrode simultaneously prints the firstexternal electrode, the internal electrode connected to the firstexternal electrode and formed at an invaginated portion of thedielectric invaginated to allow one side to be opened at one portion,and the second external electrode integrally formed with the internalelectrode by an inkjet printing.
 3. The device for manufacturing amulti-layer ceramic capacitor of claim 1, wherein side inkjet print headfor the electrode and said inkjet print head for the dielectric sprayinks by moving integrally.
 4. The device for manufacturing a multi-layerceramic capacitor of claim 1, wherein said inkjet print head for theelectrode and said inkjet print head for the dielectric spray ink bymoving independently according to its own operation signal.
 5. A methodfor manufacturing a multi-layer ceramic capacitor comprising: formingdielectric sheets simultaneously printed with internal electrode,external electrode and dielectric by spraying ink for the electrode andink for the dielectric according to a predetermined pattern employing aplurality of inkjet print heads; layering and compressing the dielectricsheets; cutting the dielectric sheets according to the predeterminedpattern; and sintering the dielectric sheets.
 6. The method formanufacturing a multi-layer ceramic capacitor of claim 5, wherein acutting line to cut said dielectric sheets is parallel to the externalelectrode and divides the external electrode into two.
 7. The method formanufacturing a multi-layer ceramic capacitor of claim 5, wherein saidpredetermined pattern is a pattern formed with alternating a line-shapedelectrode and a comb-shaped electrode, wherein the line-shaped electrodeis the first external electrode, a protrusion part of the comb-shapedelectrode is the internal electrode and a body part of the comb-shapedelectrode is the second external electrode.
 8. The method formanufacturing a multi-layer ceramic capacitor of claim 5, wherein saidplurality of inkjet print heads comprise an inkjet print head for theelectrode spraying ink for the electrode and an inkjet print head forthe dielectric spraying ink for the dielectric.
 9. The method formanufacturing a multi-layer ceramic capacitor of claim 8, wherein saidinkjet print head for the electrode and said inkjet print head for thedielectric spray inks by moving integrally.
 10. The method formanufacturing a multi-layer ceramic capacitor of claim 8, wherein saidinkjet print head for the electrode and said inkjet print head for thedielectric spray inks by moving independently according to its ownoperation signals.
 11. A method for manufacturing a multi-layer ceramiccapacitor comprising: forming lower dielectric sheets simultaneouslyprinted with internal electrode, external electrode, and dielectric byspraying ink for the electrode and ink for the dielectric according to apredetermined pattern employing a plurality of inkjet print heads;forming upper dielectric sheets with a predetermined numbersimultaneously printed with internal electrode, external electrode, anddielectric by spraying ink for the electrode and ink for the dielectricaccording to a predetermined pattern employing a plurality of inkjetprint heads on the lower dielectric sheets; and sintering the lowerdielectric sheets and the upper dielectric sheets with a predeterminednumber.
 12. The method for manufacturing a multi-layer ceramic capacitorof claim 11, the method further comprising cutting said lower dielectricsheets and said upper dielectric sheets according to a predeterminedpattern.
 13. The method for manufacturing a multi-layer ceramiccapacitor of claim 11, wherein said plurality of inkjet print headscomprise an inkjet print head for the electrode spraying ink for theelectrode and an inkjet print head for the dielectric spraying ink forthe dielectric.
 14. The method for manufacturing a multi-layer ceramiccapacitor of claim 13, wherein said inkjet print head for the electrodeand said inkjet print head for the dielectric spray inks by movingintegrally.
 15. The method for manufacturing a multi-layer ceramiccapacitor of claim 13, wherein said inkjet print head for the electrodeand said inkjet print head for the dielectric spray inks by movingindependently according to its own operation signals.
 16. A multi-layerceramic capacitor comprising a first external electrode, dielectricinvaginated to allow one side to be opened at a portion and connected tothe first external electrode, internal electrode formed at theinvaginated portion of the dielectric, and a plurality of dielectricsheets printed with a second external electrode formed integrally withthe internal electrode, wherein the dielectric sheets are layeredsymmetrically with alternating the first external electrode and thesecond external electrode to connect electrically each other.
 17. Themulti-layer ceramic capacitor of claim 16, wherein said multi-layerceramic capacitor is printed simultaneously with the first externalelectrode, the dielectric, the internal electrode, and the secondexternal electrode by an inkjet printing
 18. The multi-layer ceramiccapacitor of claim 17, wherein said inkjet printing is a method to sprayink for the electrode and ink for the dielectric according topredetermined patterns by employing a plurality of inkjet print heads.19. The multi-layer ceramic capacitor of claim 16, wherein said firstexternal electrode, said dielectric, said internal electrode, and saidsecond external electrode are formed with different materials from eachother.